1284140344 has 8 divisors (see below), whose sum is σ = 2407763160. Its totient is φ = 642070168.

The previous prime is 1284140323. The next prime is 1284140353. The reversal of 1284140344 is 4430414821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80258764 + ... + 80258779.

It is an arithmetic number, because the mean of its divisors is an integer number (300970395).

Almost surely, 2^1284140344 is an apocalyptic number.

It is an amenable number.

1284140344 is a deficient number, since it is larger than the sum of its proper divisors (1123622816).

1284140344 is a wasteful number, since it uses less digits than its factorization.

1284140344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160517549 (or 160517545 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 1284140344 is about 35834.9039903835. The cubic root of 1284140344 is about 1086.9364765103.

The spelling of 1284140344 in words is "one billion, two hundred eighty-four million, one hundred forty thousand, three hundred forty-four".